How to fix?

Since this error occurs at boot, you will need to boot yourself in RESCUE mode to fix this problem.

1. Download yourself a Centos/Redhat Full installation CD for the version of Linux you have. 2. Boot the CD into the first installation screen 3. Enter ‘Linux Rescue’ 4. Go through the text UI boot process and you will be prompted with “Do you want to start the network interfaces on this system?” Select No 5. Then the system will automatically try to search for your Linux installations. Select Continue. 6. Once it’s found your Linux installation, it will automatically mount it under /mnt/sysimage. Select OK to continue. 7. Once that’s done you will exit into the shell. 8. Follow the previous instruction and change your root the found partition.